Affiliation of Author(s):航空学院

Journal:Hangkong Dongli Xuebao

Abstract:The critical influential factors limiting the flight performance of conventional multi-axis aircraft were analyzed. The method to improve the flight performance of multi-rotor aircraft was studied by means of variation of rotor collective pitch and rotational speed. Based on dynamic stall, unsteady flap and dynamic inflow model, a comprehensive aerodynamic theoretical model was developed to analyze the flight performance. A demonstrator multi-axis rotor aircraft was developed for flight test. The flight experimental results and theoretical results showed that the aircraft required power increases obviously with the increase of takeoff weight. Under different payloads and rotor rotational speed conditions, experimental and theoretical required very good agreement of the power results up to 97% at light load reach and 95% at heavy load respectively. By means of comparison and analysis, the theoretical performance analysis method was validated. And furthermore the simulation demonstrated that variation of the rotor collective pitch and rotational speed evidently improved maximal take-off weight and flight duration of multi-axis aircraft. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.

ISSN No.:1000-8055

Translation or Not:no

Date of Publication:2018-05-01

Co-author:Alice,Lin, Ziguo

Correspondence Author:Song Yanguo